Pulse Indicator Patents (Class 600/502)
  • Patent number: 8311748
    Abstract: Embodiments include a system for determining cardiovascular information for a patient. The system may include at least one computer system configured to receive patient-specific data regarding a geometry of the patient's heart, and create a three-dimensional model representing at least a portion of the patient's heart based on the patient-specific data. The at least one computer system may be further configured to create a physics-based model relating to a blood flow characteristic of the patient's heart and determine a fractional flow reserve within the patient's heart based on the three-dimensional model and the physics-based model.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: November 13, 2012
    Assignee: HeartFlow, Inc.
    Inventors: Charles A. Taylor, Timothy A. Fonte, Gilwoo Choi
  • Patent number: 8303512
    Abstract: The present invention realizes calculating a pulse rate accurately, even when a body movement component has no periodical characteristics, by surely removing the body movement component generated in a living organism from a pulse wave component. A pulse wave detecting section includes a pulse wave sensor and outputs a pulse wave detection signal to an MPU functioning as a body motion component removing section. A body motion sensor outputs a body motion detection signal corresponding to a body motion that affects the behavior of venous blood to the MPU. As a result, to the MPU removes the body motion component from the pulse wave detection signal based on the body motion detection signal. A pulse rate calculating section calculates the pulse rate based on the pulse wave detection signal from which the body motion component has been removed. The pulse rate is displayed on a liquid crystal display device.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: November 6, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Tsukasa Kosuda, Makoto Zakoji, Ichiro Aoshima, Yutaka Kawafune, Norimitsu Baba
  • Patent number: 8295901
    Abstract: An apparatus for determining a spectral ratio between a first signal having a first spectrum which depends on a biological quantity, and a second signal having a second spectrum which depends on a biological quantity, the first signal and the second signal having a plurality of harmonics of a periodic signal, the apparatus including a computer for computing a first wave ratio between a spectral value of the first spectrum which has a frequency of a harmonic of the plurality of harmonics, and a spectral value of the second spectrum which has the frequency of the harmonic; and for computing a second wave ratio between a spectral value of the first spectrum which has a frequency of another harmonic of the plurality of harmonics, and a spectral value of the second spectrum which has the frequency of the other harmonic. In addition, the apparatus includes an optimizer.
    Type: Grant
    Filed: February 16, 2007
    Date of Patent: October 23, 2012
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung E.V.
    Inventors: Andreas Tobola, Ulrich Vogl, Hans-Joachim Moersdorf
  • Patent number: 8287725
    Abstract: The invention relates to prediction of a rapid symptomatic drop in a subject's blood pressure, e.g. during a medical treatment or when operating an aircraft. To this aim, a pulse shape parameter (Pps) with respect to a peripheral body part (105) of the subject (P) is registered by means of a pulse oximetry instrument (110) adapted to detect light response variations in blood vessels. An initial pulse magnitude measure is calculated based on a pulse shape parameter (Pps) received at a first instance. During a measurement period subsequent to the first instance, a respective pulse magnitude measure is calculated based on each of a number of received pulse shape parameters (Pps). It is further investigated, for each pulse magnitude measure in the measurement period, whether or not the measure fulfills a decision criterion relative to the initial pulse magnitude measure. An alarm triggering signal (?) is generated if the decision criterion is found to be fulfilled.
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: October 16, 2012
    Assignee: Gambro Lundia AB
    Inventors: Leif Sörnmo, Kristian Solem, Bo Olde
  • Patent number: 8290557
    Abstract: An implantable medical device includes a hermetically sealed housing and a first light emitting diode (LED) enclosed within the housing configured to detect light corresponding to a selected light wavelength. A conductive element extends from the LED for carrying a current signal corresponding to the light detected by the LED, the intensity of the detected light being correlated to a change in a physiological condition in a body fluid volume or a tissue volume proximate the LED.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: October 16, 2012
    Assignee: Medtronic, Inc.
    Inventors: Timothy J. Davis, Jonathan P. Roberts, James D. Reinke, Jonathan L. Kuhn, Shawn D. Knowles
  • Patent number: 8282567
    Abstract: A method and system for determining pulse rate of a patient are disclosed. The method and system include acquiring measured information for at least one pulse at a pressure step, determining and storing quality values for the at least one pulse at the pressure step, analyzing pulse matching criteria for the pressure step, and determining pulse rate based on the measured information, quality values, and pulse matching criteria.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: October 9, 2012
    Assignee: General Electric Company
    Inventors: Sai Kolluri, Lawrence T. Hersh, Richard Medero
  • Patent number: 8277384
    Abstract: A system, method and medical tool are presented for use in non-invasive in vivo determination of at least one desired parameter or condition of a subject having a scattering medium in a target region. The measurement system comprises an illuminating system, a detection system, and a control system. The illumination system comprises at least one light source configured for generating partially or entirely coherent light to be applied to the target region to cause a light response signal from the illuminated region. The detection system comprises at least one light detection unit configured for detecting time-dependent fluctuations of the intensity of the light response and generating data indicative of a dynamic light scattering (DLS) measurement. The control system is configured and operable to receive and analyze the data indicative of the DLS measurement to determine the at least one desired parameter or condition, and generate output data indicative thereof.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: October 2, 2012
    Inventor: Ilya Fine
  • Patent number: 8273032
    Abstract: An implanted system includes at least two optical sensors implanted proximate to an artery of a patient such that one optical sensor is upstream of another optical sensor. Arterial pulses of the patient may be detected based on electrical signals from at least one of the optical sensors. In addition, electrical signals from the optical sensors may be used to minimize the effects of motion artifacts on the detection of arterial pulses. For example, a detected pulse may be determined to be a spurious pulse if the optical sensors indicate the occurrence of the pulse within a predetermined range of time. As another example, a first optical sensor signal may be shifted in time relative to a second optical sensor signal, and the signals may be correlated. An arterial pulse may be detected at a time at which a peak or trough amplitude value of the correlated signal is observed.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: September 25, 2012
    Assignee: Medtronic, Inc.
    Inventors: James Kevin Carney, Can Cinbis
  • Patent number: 8257270
    Abstract: A pulse wave measuring apparatus includes a pulse wave measuring unit measuring a pulse wave; a first detection unit detecting first maximum and minimum values; a second detection unit detecting second maximum and minimum values; an update unit updating the first maximum and minimum values with the second maximum and minimum values after time periods; an initialization unit initializing the second maximum and minimum values after updating the first maximum and minimum values; a timing detection unit detecting a time determined by the first maximum and minimum values; and an interval calculation unit calculating a pulse wave interval using the timing.
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: September 4, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazushige Ouchi, Takuji Suzuki, Kenichi Kameyama
  • Patent number: 8257269
    Abstract: Disclosed is an apparatus for analyzing pulse using an array of pressure sensors comprising: an array of pressure sensors that measures the pulse data with a plurality of piezoresistive pressure sensors; a moving part that moves the array of pressure sensors; a controller that controls the moving part, so that the array of pressure sensors can be positioned at the pulse diagnosis site, and analyzes the pulse data measured by the array of pressure sensors; and a display that displays the pulse profile analyzed by the controller. Since both the applied pressure and the pulse pressure can be measured simultaneously using the piezoresistive pressure sensors, various pulse diagnosis techniques can be applied and since pulse length, pulse thickness, etc. can be displayed in four dimensions, softness or roughness of the pulse and other pulse information can be conveyed visually.
    Type: Grant
    Filed: June 21, 2006
    Date of Patent: September 4, 2012
    Assignee: Daeyo Medi Co., Ltd.
    Inventors: Hee-Jung Kang, Young-Sang Kwon
  • Patent number: 8255029
    Abstract: A physiological measurement system is disclosed which can take a pulse oximetry signal such as a photoplethysmogram from a patient and then analyse the signal to measure physiological parameters including respiration, pulse, oxygen saturation and movement. The system can be used as a general monitor, or more specifically, to for infant or adult apnea, and to guard against sudden infant death syndrome.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: August 28, 2012
    Assignee: Nellcor Puritan Bennett LLC
    Inventors: Paul Stanley Addison, James Nicholas Watson
  • Patent number: 8249815
    Abstract: Embodiments include a system for planning treatment for a patient. The system may include at least one computer system configured to receive patient-specific data regarding a geometry of an anatomical structure of the patient, create a three-dimensional model representing at least a portion of the anatomical structure of the patient based on the patient-specific data, and determine a first fractional flow reserve within the anatomical structure of the patient based on the three-dimensional model and information regarding a physiological condition of the patient. The at least one computer system may be further configured to receive input from a user regarding a plan of treatment, modify the physiological condition of the patient based on the received input, and determine a second fractional flow reserve within the anatomical structure of the patient based on the modified physiological condition of the patient.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: August 21, 2012
    Assignee: HeartFlow, Inc.
    Inventor: Charles A. Taylor
  • Patent number: 8235911
    Abstract: According to embodiments, systems and methods are provided for filtering a signal. A first reference signal may be generated according to a signal model and a second reference signal may be generated by analyzing a continuous wavelet transform of a signal. The first and second reference signals may then both be applied to an input signal to filter the input signal according to the components of both of the reference signals.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: August 7, 2012
    Assignee: Nellcor Puritan Bennett Ireland
    Inventors: James Nicholas Watson, Paul Stanley Addison
  • Patent number: 8226568
    Abstract: According to embodiments, systems and methods are provided that use continuous wavelet transforms and basis functions to provide an optimized system for the determination of physiological information. In an embodiment, the basis functions may be used to refine an area of interest in the signal in frequency or in time, and the continuous wavelet transform may be used to identify a maxima ridge in the scalogram at scales with characteristic frequencies proximal to the frequency or frequencies of interest. In another embodiment, a wavelet transform may be used to identify regions of a signal with the morphology of interest while basis functions may be used to focus on these regions to determine or filter information of interest. In yet another embodiment, basis functions and continuous wavelet transforms may be used concurrently and their results combined to form optimized information or a confidence metric for determined physiological information.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: July 24, 2012
    Assignee: Nellcor Puritan Bennett LLC
    Inventors: James Nicholas Watson, Paul Stanley Addison
  • Patent number: 8190227
    Abstract: A method and an apparatus to analyze two measured signals that are modeled as containing desired and undesired portions such as noise, FM and AM modulation. Coefficients relate the two signals according to a model defined in accordance with the present invention. In one embodiment, a transformation is used to evaluate a ratio of the two measured signals in order to find appropriate coefficients. The measured signals are then fed into a signal scrubber which uses the coefficients to remove the unwanted portions. The signal scrubbing is performed in either the time domain or in the frequency domain. The method and apparatus are particularly advantageous to blood oximetry and pulserate measurements. In another embodiment, an estimate of the pulserate is obtained by applying a set of rules to a spectral transform of the scrubbed signal. In another embodiment, an estimate of the pulserate is obtained by transforming the scrubbed signal from a first spectral domain into a second spectral domain.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: May 29, 2012
    Assignee: MASIMO Corporation
    Inventors: Mohamed K. Diab, Rex McCarthy
  • Patent number: 8180420
    Abstract: A method and an apparatus to analyze two measured signals that are modeled as containing desired and undesired portions such as noise, FM and AM modulation. Coefficients relate the two signals according to a model defined in accordance with the present invention. In one embodiment, a transformation is used to evaluate a ratio of the two measured signals in order to find appropriate coefficients. The measured signals are then fed into a signal scrubber which uses the coefficients to remove the unwanted portions. The signal scrubbing is performed in either the time domain or in the frequency domain. The method and apparatus are particularly advantageous to blood oximetry and pulserate measurements. In another embodiment, an estimate of the pulserate is obtained by applying a set of rules to a spectral transform of the scrubbed signal. In another embodiment, an estimate of the pulserate is obtained by transforming the scrubbed signal from a first spectral domain into a second spectral domain.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: May 15, 2012
    Assignee: MASIMO Corporation
    Inventors: Mohamed K. Diab, Rex McCarthy
  • Patent number: 8175670
    Abstract: A method and system for measuring a physiological parameter, comprising collecting a first absorbance at a first wavelength, chosen to be primarily absorbed by water; collecting a second absorbance at a second wavelength, chosen to be primarily absorbed by hemoglobin; and combining the first signal and the second signal to generate a combined plethysmograph signal which is proportionate lower in noise caused by motion-related interference.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: May 8, 2012
    Assignee: Nellcor Puritan Bennett LLC
    Inventors: Clark R. Baker, Jr., Edward Karst, Carine Hoarau
  • Patent number: 8128572
    Abstract: The present invention involves method and apparatus for analyzing measured signals that are modeled as containing primary and secondary portions. Coefficients relate the two signals according to a model defined in accordance with the present invention. In one embodiment, the present invention involves utilizing a transformation which evaluates a plurality of possible signal coefficients in order to find appropriate coefficients. Alternatively, the present invention involves using statistical functions or Fourier transform and windowing techniques to determine the coefficients relating to two measured signals. Use of this invention is described in particular detail with respect to blood oximetry measurements.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: March 6, 2012
    Assignee: Masimo Corporation
    Inventors: Mohamed K. Diab, Esmaiel Kiani-Azarbayjany, Ibrahim M. Elfadel, Rex J. McCarthy, Walter M. Weber, Robert A. Smith
  • Patent number: 8096953
    Abstract: An organism information detecting apparatus includes a detector that detects organism information of a subject for a predetermined sampling time period, determines a motion state of the subject when the organism information is detected, and outputs an organism signal. A first calculator processes the organism signal to calculate organism information data, the detector determining a reliability degree of the organism information data based on whether the determined motion state of the subject is a previously determined motion state. A second calculator calculates an average value of the amount of variation per time of data obtained by digitizing the organism signal, the average value being data supplementary to the organism information data. The detector determines the motion state of the subject based on whether the supplementary data exceeds a previously determined threshold.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: January 17, 2012
    Assignee: Seiko Instruments Inc.
    Inventors: Takashi Nakamura, Kazuya Maegawa, Koichi Moriya, Shinichiro Miyahara, Kaori Takano
  • Patent number: 8095192
    Abstract: The present disclosure generally relates to determining the quality of signal used for measuring a physiological parameter. One embodiment of the present disclosure is directed towards a pulse oximeter, where the measured physiological parameter includes a patient's pulse rate and blood oxygen saturation. The signal quality is calculated by combining a plurality of signal quality indicators, each of which is an indicator of a quality of the measured signal. The value of the signal quality metric is compared to a threshold and based on this comparison various decisions are made by the medical device. One decision is directed towards deciding whether or not to display the measured physiological parameter, to ensure that only accurate measured values are displayed. Another decision is directed towards providing feedback to guide the clinician to adjust the location of the sensor to a more suitable tissue location.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: January 10, 2012
    Assignee: Nellcor Puritan Bennett LLC
    Inventors: Clark R. Baker, Jr., Edward M. Richards
  • Patent number: 8064975
    Abstract: Embodiments of the present invention relate to a method of estimating a blood flow characteristic in a patient. Present embodiments include providing a first probability distribution for an actual value of a function of the blood flow characteristic based on a previous value of the function, providing a second probability distribution describing a probability that observations of the blood flow characteristic were made given that the blood flow characteristic took a certain value, and combining the first and second probability distributions to facilitate selection of a most likely value of the function for posting as the value of the estimated blood flow characteristic.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: November 22, 2011
    Assignee: Nellcor Puritan Bennett LLC
    Inventor: Steven E. Pav
  • Patent number: 8046040
    Abstract: According to some embodiments of the present invention, a display is used to show an indication of the signal's quality. This indication of the signal's quality may be provided in a number of ways, including one or more audio and/or visual alarms.
    Type: Grant
    Filed: April 4, 2006
    Date of Patent: October 25, 2011
    Assignee: Masimo Corporation
    Inventors: Ammar Al Ali, Divya S. Breed, Jerome J. Novak, Massi E. Kiani
  • Patent number: 8046058
    Abstract: A subject's heart rate is determined. A heart rate monitor receives a Doppler signal reflected from an artery of a target, performs demodulation and heart beat recognition techniques to determine a set of features in each frame of the signal. Pattern classification is performed to determine if the extracted feature sequence is associated with heart beats. The pattern classification may include finding the optimal state sequence by calculating the probability of each allowable state sequence based on the extracted feature sequence and heart beat models or additional noise models. Or, a heart beat candidate is determined using frame energy and dynamic thresholding followed by computing the probabilities between the feature sequence and each stored heart beat model or additional noise models. Or, heart beat candidates are determined using frame energy and dynamic thresholding which compute the similarity between the feature sequences and each of the stored heart beat templates.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: October 25, 2011
    Assignee: Salutron, Inc.
    Inventors: Szming Lin, Thomas Ying-Ching Lo
  • Publication number: 20110257543
    Abstract: The present invention relates to an arm-fastening device for a pulse diagnosis, a pulse sensor, a pulse diagnosis apparatus comprising the device and sensor, and a method for manufacturing the pulse sensor. Embodiments of the present invention permit the pulse of a person to be examined to be correctly measured in the state in which the person to be examined is a comfortable one when the pulse of the person to be examined is being measured.
    Type: Application
    Filed: June 9, 2009
    Publication date: October 20, 2011
    Applicant: Korea Institute of Oriental medicine
    Inventors: Young Ju Jeon, Young Jae Woo, Hyun Hee Ryu, Jong Yeol Kim
  • Patent number: 7991448
    Abstract: A method for removing motion artifacts from devices for sensing bodily parameters and apparatus and system for effecting same that includes analyzing segments of measured data representing bodily parameters and possibly noise from motion artifacts. Each data segment is frequency analyzed to determine up to three candidate peaks for further analysis. Up to three candidate frequencies may be filtered and various parameters associated with each candidate frequency are calculated. A pulse-estimate input may also be accepted from an external source. The best frequency, if one exists, is determined by arbitrating the candidate frequencies and the pulse-estimate input using the calculated parameters according to predefined criteria. If a best frequency is found, a pulse rate and SpO2 may be output. If a best frequency is not found, other, conventional techniques for calculating pulse rate and SpO2 may be used.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: August 2, 2011
    Assignee: Philips Electronics North America Corporation
    Inventors: Reuben W. Edgar, Jr., August J. Allo, Jr., Paul B. Gunneson, Jesus D. Martin, John R. DelFavero, Michael B. Jaffe
  • Patent number: 7976472
    Abstract: A hypovolemia monitor comprises a plethysmograph input responsive to light intensity after absorption by fleshy tissue. A measurement of respiration-induced variation in the input is made. The measurement is normalized and converted into a hypovolemia parameter. An audible or visual indication of hypovolemia is provided, based upon the hypovolemia parameter.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: July 12, 2011
    Assignee: Masimo Corporation
    Inventor: Massi E. Kiani
  • Patent number: 7970459
    Abstract: A sleepiness level detection method of determining a sleepiness level of a subject, includes: detecting a heart beat signal indicating a signal of heart beats from the subject and storing the heart beat signal in a storage device; detecting amplitude peaks of the heart beat signal and detecting an interval between the amplitude peaks as a heart beat interval; and computing a spectral density corresponding to fluctuation in the heart beat interval detected and determining the sleepiness level based on a maximum frequency at which the spectral density is maximum.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: June 28, 2011
    Assignee: Fujitsu Limited
    Inventor: Ayu Karasudani
  • Patent number: 7931599
    Abstract: A method and apparatus for reducing the effects of noise on a system for measuring physiological parameters, such as, for example, a pulse oximeter. The method and apparatus of the invention take into account the physical limitations on various physiological parameters being monitored when weighting and averaging a series of measurements. Varying weights are assigned different measurements, measurements are rejected, and the averaging period is adjusted according to the reliability of the measurements. Similarly, calculated values derived from analyzing the measurements are also assigned varying weights and averaged over adjustable periods. More specifically, a general class of filters such as, for example, Kalman filters, is employed in processing the measurements and calculated values. The filters use mathematical models which describe how the physiological parameters change in time, and how these parameters relate to measurement in a noisy environment.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: April 26, 2011
    Assignee: Nellcor Puritan Bennett LLC
    Inventors: Clark R. Baker, Jr., Thomas J. Yorkey
  • Patent number: 7922665
    Abstract: Embodiments of the present invention relate to a method for analyzing pulse data. In one embodiment, the method comprises receiving a signal containing data representing a plurality of pulses, the signal generated in response to detecting light scattered from blood perfused tissue. Further, one embodiment includes performing a pulse identification or qualification algorithm on at least a portion of the data, the pulse identification or qualification algorithm comprising at least one constant, and modifying the at least one constant based on results obtained from performing the pulse identification or qualification algorithm, wherein the results indicate that a designated number of rejected pulses has been reached.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: April 12, 2011
    Assignee: Nellcor Puritan Bennett LLC
    Inventor: Clark R. Baker, Jr.
  • Publication number: 20110071884
    Abstract: A system for storing information about searches and inquiries by a customer is provided. The system includes a customer service server that receives information from two or more sources, such as from a retail location sales agent, a website, a call center agent, etc. The information is associated and correlated to interrelate inquiries from the different sources. Further, when the user enters a retail location, a node or server at the retail location can push test application to a user's mobile device based on the past inquiries. These test applications are provided only when the customer is present in the retail location. As such, hacking the application is prevented. Further, with the customer using the application in the retail location, a sales agent is present to assist the customer.
    Type: Application
    Filed: September 24, 2009
    Publication date: March 24, 2011
    Applicant: AVAYA, INC.
    Inventors: PAUL ROLLER MICHAELIS, DAVID S. MOHLER
  • Patent number: 7904132
    Abstract: A transform for determining a physiological measurement is disclosed. The transform determines a basis function index from a physiological signal obtained through a physiological sensor. A basis function waveform is generated based on basis function index. The basis function waveform is then used to determine an optimized basis function waveform. The optimized basis function waveform is used to calculate a physiological measurement.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: March 8, 2011
    Assignee: Masimo Corporation
    Inventors: Walter M. Weber, Ammar Al-Ali, Lorenzo Cazzoli
  • Patent number: 7887492
    Abstract: A monitoring device (20) and method (200) for monitoring the health of a user is disclosed herein. The monitoring device (20) is preferably an article (25), an optical sensor (30), a circuitry assembly (35) a display member (40) and a control component (43). The monitoring device (20) preferably displays the following information about the user: pulse rate; calories expended by the user of a pre-set time period; target zones of activity; time; and distance traveled.
    Type: Grant
    Filed: June 24, 2006
    Date of Patent: February 15, 2011
    Assignee: Impact Sports Technologies, Inc.
    Inventors: Nikolai Rulkov, Mark Hunt, Donald Brady, Sammy I. Elhag, Steve Lui
  • Patent number: 7873497
    Abstract: A variable indication estimator which determines an output value representative of a set of input data. For example, the estimator can reduce input data to estimates of a desired signal, select a time, and determine an output value from the estimates and the time. In one embodiment, the time is selected using one or more adjustable signal confidence parameters determine where along the estimates the output value will be computed. By varying the parameters, the characteristics of the output value are variable. For example, when input signal confidence is low, the parameters are adjusted so that the output value is a smoothed representation of the input signal. When input signal confidence is high, the parameters are adjusted so that the output value has a faster and more accurate response to the input signal.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: January 18, 2011
    Assignee: Masimo Corporation
    Inventors: Walter M. Weber, Ammar Al-Ali, Lorenzo Cazzoli
  • Patent number: 7865224
    Abstract: In a physiological monitor, a method and an apparatus for determining a patient's pulse rate using data corresponding to a plurality of wavelengths of electromagnetic energy transmitted through the tissue of the patient. The method includes tracking the pulse rate in the data using an adaptive comb filter, the data having signal portions corresponding to the pulse rate and signal portions corresponding to noise, periodically calculating a frequency power spectrum of one of the wavelengths, and using the frequency power spectrum in a pulse rate calculator to determine the pulse rate or to verify the pulse rate calculated by the pulse rate calculator.
    Type: Grant
    Filed: October 12, 2004
    Date of Patent: January 4, 2011
    Assignee: Nellcor Puritan Bennett LLC
    Inventors: Clark R. Baker, Jr., Thomas J. Yorkey
  • Patent number: 7844315
    Abstract: A sensor signal is input at a patient location and a physiological waveform responsive to the sensor signal is generated. The physiological waveform is wirelessly communicated from the patient location to a monitor location. The physiological waveform is adapted to a particular patient monitor at the monitor location. The adapted physiological waveform is output to a sensor port of the patient monitor. Accordingly, the patient monitor derives physiological measurements from the adapted physiological waveform that are generally equivalent to measurements derivable from the physiological waveform by a monitor compatible with the sensor signal.
    Type: Grant
    Filed: May 3, 2006
    Date of Patent: November 30, 2010
    Assignee: Masimo Corporation
    Inventor: Ammar Al-Ali
  • Patent number: 7844314
    Abstract: A sensor interface is configured to receive a sensor signal. A transmitter modulates a first baseband signal responsive to the sensor signal so as to generate a transmit signal. A receiver demodulates a receive signal corresponding to the transmit signal so as to generate a second baseband signal corresponding to the first baseband signal. Further, a monitor interface is configured to communicate a waveform responsive to the second baseband signal to a sensor port of a monitor. The waveform is adapted to the monitor so that measurements derived by the monitor from the waveform are generally equivalent to measurements derivable from the sensor signal. The communications adapter may further comprise a signal processor having an input in communications with the sensor interface, where the signal processor is operable to derive a parameter responsive to the sensor signal and where the first baseband signal is responsive to the parameter.
    Type: Grant
    Filed: February 1, 2005
    Date of Patent: November 30, 2010
    Assignee: Masimo Corporation
    Inventor: Ammar Al-Ali
  • Patent number: 7824340
    Abstract: The present invention relates to a noninvasive medical pulsimeter sensor using magnetic thin films. By forming a pulse-sensing part array with magnetic sensors such as GMR devices, MTJ devices and the likes, over the skin-contacting part which consists of a magnetic material, the present invention increases the integrity of sensors, minimizes the time for searching the pulse and it is applicable widely to portable pulsimeters and the likes.
    Type: Grant
    Filed: October 19, 2006
    Date of Patent: November 2, 2010
    Assignee: Sangji University Industry Academy Cooperation Foundation
    Inventors: Sang Suk Lee, Do Guwn Hwang, Ki Wang Kim, Sun Wook Kim, Hyeon Ho Kim
  • Patent number: 7822453
    Abstract: Forehead oximetry sensor devices and methods for determining physiological parameters using forehead oximetry sensors. One method includes placing an oximetry sensor on the forehead of a patient, such that the sensor is placed on the lower forehead region, above the eyebrow with the sensor optics placed lateral of the iris and proximal the temple; and operating the pulse oximeter to obtain the physiological parameter. In one aspect, the method also includes providing and placing a headband over the oximetry sensor, or alternately, the sensor is a headband-integrated sensor. The headband has an elastic segment sized to fit around the patient's head. The headband also includes a non-elastic segment that is smaller than and attached with the elastic segment. The non-elastic segment is sized to span a portion of the elastic segment when the elastic segment is stretched. In addition, the non-elastic segment is larger than the portion of the elastic segment it spans when the elastic segment is not stretched.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: October 26, 2010
    Assignee: Nellcor Puritan Bennett LLC
    Inventors: Paul D. Mannheimer, Don Hannula, Donald E. Bebout, Michael Patrick O'Neil
  • Publication number: 20100249619
    Abstract: An apparatus for determining physical fitness levels, includes: a pulse measuring unit which measures a pulse rate of a user at rest; a measurement processor which acquires a pulse rate ratio of the pulse rate relative to a maximum pulse rate which is determined by an actual age of the user, estimates an oxygen uptake ratio on the basis of the pulse rate ratio and the actual age, and calculates a maximum oxygen uptake from an oxygen uptake at rest by using the oxygen uptake ratio; a conversion table which associates a maximum oxygen uptake with a physical fitness level; and a determiner which determines the physical fitness level in accordance with the calculated maximum oxygen uptake and the conversion table.
    Type: Application
    Filed: March 18, 2010
    Publication date: September 30, 2010
    Applicant: FUJITSU LIMITED
    Inventor: Koichiro KASAMA
  • Publication number: 20100189209
    Abstract: A step rate optimization device (12). The device includes a timer, a pedometer, an arterial waveform sensor (24), a processor and an indicator (16). The timer is adapted to measure a predetermined period of time and issue a first signal indicative thereof. The pedometer is adapted to measure the number of a user's steps over the predetermined period of time and issue a second signal indicative thereof. The arterial waveform sensor (24) is adapted to issue a third signal indicative of the user's arterial pulse waveform over the predetermined period of time. The processor is adapted to receive said first, second and third signals and determine and issue a fourth signal indicative of the user's dominant stride rate frequency, the user's dominant pulse rate waveform frequency and the interaction of the user's dominant stride rate frequency and the user's dominant pulse rate waveform frequency in the range of approximately 0-8 Hz.
    Type: Application
    Filed: June 2, 2008
    Publication date: July 29, 2010
    Applicant: ATCOR MEDICAL PTY. LTD.
    Inventor: Michael F. O'Rourke
  • Publication number: 20100168592
    Abstract: Disclosed is an apparatus for analyzing pulse using an array of pressure sensors comprising: an array of pressure sensors that measures the pulse data with a plurality of piezoresistive pressure sensors; a moving part that moves the array of pressure sensors; a controller that controls the moving part, so that the array of pressure sensors can be positioned at the pulse diagnosis site, and analyzes the pulse data measured by the array of pressure sensors; and a display that displays the pulse profile analyzed by the controller. Since both the applied pressure and the pulse pressure can be measured simultaneously using the piezoresistive pressure sensors, various pulse diagnosis techniques can be applied and since pulse length, pulse thickness, etc. can be displayed in four dimensions, softness or roughness of the pulse and other pulse information can be conveyed visually.
    Type: Application
    Filed: June 21, 2006
    Publication date: July 1, 2010
    Inventors: Hee-Jung Kang, Young-Sang Kwon
  • Publication number: 20100152586
    Abstract: Systems and methods described herein include an array of sensors positioned on a tool. In one embodiment, among others, a tool includes a handle configured to be manipulated by a user. The tool also includes an end portion arranged in mechanical communication with the handle. In addition, the tool includes an array of sensors mounted on the end portion, in which the array of sensors is configured to sense a property of an object. The tool also comprises a processing device configured to process the properties of the object sensed by the array of sensors and to obtain spatial information of the object. The processing device is further configured to communicate the spatial information to the handle.
    Type: Application
    Filed: December 12, 2008
    Publication date: June 17, 2010
    Applicant: Immersion Corporation
    Inventors: Danny A. Grant, Juan Manuel Cruz-Hernandez, Christopher J. Ullrich
  • Patent number: 7731665
    Abstract: An apparatus and method for precisely measuring various biological information of a user's body by using a single measuring apparatus enable precisely and effectively measuring biological information including body fat, pulse and a blood vessel aging degree. By measuring an infrared absorbance or infrared rays irradiated to a measurement target according to a modulation and tuning method and obtaining the information with reference to supplementary biological information obtained from a user, the plurality of biological information can be precisely measured at a low driving voltage through the modulation and tuning method by using a single infrared light source. Also, the measuring apparatus can be reduced in size by simplifying its construction and can be effectively integrated into various device.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: June 8, 2010
    Assignee: LG Electronics, Inc.
    Inventors: Kwy-Ro Lee, Hyun-Ho Oh, Min-Jae Jung, Hyung-Ki Hong, Seong-Moon Cho, Youn-Jae Lee
  • Patent number: 7727158
    Abstract: There is provided a pulse wave data analyzing method for extracting vital information out of pulse wave data concerning a living body.
    Type: Grant
    Filed: October 5, 2006
    Date of Patent: June 1, 2010
    Assignee: Konica Minolta Sensing, Inc.
    Inventors: Kazumi Kitajima, Yoshiroh Nagai, Masatake Fukunami, Yasumasa Tsukamoto
  • Publication number: 20100094141
    Abstract: A JVP ruler and a method for its use in measuring a jugular venous pressure in a patient, includes orienting the JVP ruler such that the second arm is collinear with a vertical line originating at a right atrium of the patient and such a the first arm is horizontal and having a transducer end situated opposite the pivot end of the first arm. The JVP Ruler has first and second arms elongate and situated to be in perpendicular relation one to the other. The arms meet and terminate at a pivot located at the pivot ends of the arms respectively, the transducer end being generally above a pulse point, the pulse point being a point on the skin of the patient where variations of the jugular venous pressure within the internal jugular vein are exhibited as at least vertical displacement of the skin.
    Type: Application
    Filed: October 14, 2008
    Publication date: April 15, 2010
    Inventor: Amal Lesly Puswella
  • Publication number: 20100094180
    Abstract: An apparatus treats patients suffering from vascular disease with infra-, audible- and ultrasound waves. The apparatus includes a treating head for emitting sound waves with frequencies ranging from 1 Hz to 100 kHz and feeding introducing the sound waves through a coupling medium into a body portion to be treated, an electronics connected to the treating head for energizing the treating head to emit the sound waves, and a control panel connected to the electronics to choose the electronic waveform of the energizing.
    Type: Application
    Filed: December 18, 2009
    Publication date: April 15, 2010
    Inventor: Khaled Awad Saleh NASHWAN
  • Patent number: 7691068
    Abstract: System and method that can monitor pulse rate and passively produce a blood pressure measurement and automatically log the data for the user. Additionally, coupling to the Internet or Information Systems expands the options for the early detection of diseases, based on sudden detected changes and trend analyses, and the successful treatment of these patients while reducing the high costs associated with invasive procedures and in-hospital care.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: April 6, 2010
    Assignee: University of Virginia Patent Foundation
    Inventors: Robin A. Felder, Majd Alwan, Steven W. Kell, David C. Mack
  • Patent number: 7690378
    Abstract: Methods, systems and devices are provided for monitoring respiratory disorders based on monitored factors of a photoplethysmography (PPG) signal that is representative of peripheral blood volume. The monitored factors can be respiratory effort as well as respiratory rate and/or blood oxygen saturation level. The systems and devices may or may not be implanted in a patient.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: April 6, 2010
    Assignee: Pacesetter, Inc.
    Inventor: Robert G. Turcott
  • Publication number: 20100056934
    Abstract: A pulse wave measuring apparatus disposes a plurality of light emitting elements and a plurality of light receiving elements in a line, measures pulse wave signals at locations where the light emitting elements and the light receiving elements are located, when the pulse wave measuring apparatus is worn on a wrist of the person to be examined, and determines an optimal pulse wave signal among the plurality of measured pulse wave signals to measure pulse waves. An optimal pulse wave can be detected from an optimal pulse wave signal that is detected by a combination of the light emitting element and the light receiving element that are adjacent to a blood vessel of a person to be examined.
    Type: Application
    Filed: July 30, 2009
    Publication date: March 4, 2010
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyeonsung Cho, Joochan Sohn, Jaehong Kim, Chankyu Park, Yunkoo Chung
  • Patent number: 7648463
    Abstract: A monitoring device (20) and method (200) for monitoring the health of a user is disclosed herein. The monitoring device (20) preferably includes eyewear (25) with an optical sensor (30), a digital storage and processing device (35) with a display member (40) and a control component (43), and a connection cable (45). The monitoring device (20) preferably displays the following information about the user: pulse rate; calories expended by the user of a pre-set time period; target zones of activity; time; and distance traveled.
    Type: Grant
    Filed: December 3, 2006
    Date of Patent: January 19, 2010
    Assignee: Impact Sports Technologies, Inc.
    Inventors: Sammy I Elhag, Nikolai Rulkov, Mark Hunt, Donald Brady, Steve Lui